I hear what you guys are saying about single/dual stage units but can't agree with you. I had a single stage on my Case/Ingersoll 446 for over 20 years and it done a whale of a job for me. Sticks, stones, small animals, didn't matter.
Deep snow (WI) take your time and no problems. Wet snow, same thing but smaller bites. It would clog on occasion w/wet snow but your gonna get that with anything. I did spray the chute w/silicone all the time wet or dry.
This is my first winter w/dual stage so I don't have a lot to compare one against the other, but all I can see so far is the dual stage throws the snow farther. Maybe by mid winter or spring I'll have a different view on this but as of now I'd be happy w/either system